In addition, the stop-band rejection can be further increased by using elliptic filter function which has limited frequency transmission zeros.
另外,在函数类型上使用椭圆函数型,使带外出现有限频率传输零点,进一步提高了带外抑制能力。
Analyzed and studied the influence to the radio frequency transmission performance of PCB board line as right angle line, the different line, Snake-shaped line and so on ;
分析研究了直角走线、差分走线、蛇形线等PCB板电路走线对射频传输性能的影响;
Analyzed and studied the parasitic capacity and the inductance effect which the hole produces, Analyzed the influence of PCB board hole to the radio frequency transmission performance;
分析了过孔产生的寄生电容和电感效应,PCB板过孔对射频传输性能的影响;
Typical smart meter designs include periodic transmission of current, phase, and frequency data from the user to the electricity distribution company.
典型的智能度量设计包括来用户端的电流、相位和频率数据向电力调配公司的周期传送。
The system is frequency flexible, connects hundreds of users to a single base station, and delivers superior range and link performance in voice, video and data transmission.
该系统的频率灵活,可将数百个用户连接到一个基站,提供范围广泛和性能优越的语音、视频和数据传输功能。
Bingo! But even more than that, they will have the opportunity via video to experience the transmission of frequency almost directly.
答对了!但是甚至比那还要多,他们将会有通过视频几乎直接地体会频率传输的机会。
The former realizes steady transmission of signal by testing and analysing the carrier channel's frequency characteristic .
前者是通过对载波信道的频率特性时变性测试、分析,实现信号平稳传输。
And it has introduced such several kinds of typical modules as data acquisition, Controller, Frequency spectrum analysis and remote data transmission, etc.
并在此基础上,详细介绍了数据链接、控制器、频谱分析、远程数据传输等几种典型模块。
Audio transformer: Large transmission power, wide frequency range, stable performance. Used for telephone, fax machine, VCD, DVD, and audio etc.
详细信息:高传输功率,工作频率宽,性能问题。适用于电话机、真机、CD、VD音响设备中。
The superficial layers are often frequency selective to transmission .
表层传播一般都有频率选择性。
Recent estimates of the frequency of disease transmission by a single unit of blood are shown in Table 1.
通过每一单位血液传播疾病频数的最新估计在表1中列出。
This kind of method, combining search with track, combining hardware with software, can adapt the quick change of transmission frequency.
这种方法采用频率搜索和跟踪相结合,软件和硬件相结合,以适应发射频率的快速变化。
Based on the frequency parameters, a new transformation method to determine the response to lightning impulse wave on transmission line with corona is proposed in this paper.
本文在频变参数基础上提出了一种计算电晕线路响应特性的新变换方法,并用其计算了线路的雷电波响应。
High data transmission rates and high mobility give rise to time - and frequency - selectivity in wireless communication channels.
高数据传输速率以及终端的高速移动,导致无线通信信道具有时间选择性与频率选择性两个特征。
The radiation pattern in the near and far field of each frequency component of the spectrum of current pulse on a transmission line.
传输线线上脉波电流之频谱与分布及其各频率成份之辐射远近场型之差异。
Line equalizer control method, and integrating circuit, frequency shift circuit and transmission device.
线路均衡器控制方法,积分电路,频移电路和传输装置。
This system can utilize the transmission bandwidth more efficiently and achieve frequency diversity.
这种系统能更有效地利用传输带宽,实现频率分集。
Tremendous growth in demand of the users and limitation of our frequency resource needs more efficient transmission techniques to realize high efficiency of spectrum utilization.
移动用户飞速增长的业务需求和日益紧张的频率资源要求更有效的传输技术来实现频谱资源的高效利用。
Then it introduces the modeling method of frequency selection channel in mobile transmission environment. It also gives the model hardware implementation architecture and simulation results.
其次重点研究了移动传播环境的频率选择性信道的建摸方法,并给出了模型的硬件实现结构和仿真结果。
The disinhibitory IF of subcortical neurons contributes to transmission of low spatial frequency information of visual images and tO the maintenance of color constancy.
皮层下神经元的去抑制整合野参与传递视觉图像中的低空间频率信息,并与色觉恒定性机制有关。
With the increasing of transmission frequency of data communication cable, the requirement of predicting SRL online became urgent according to the demand in last 100m of broadband user access network.
随着数字通信电缆传输频率越来越高,为了达到宽带用户接入网最后100米的要求,对SRL的在线预测变得越来越迫切。
This paper investigated the timing and frequency offset estimation algorithm of OFDM burst transmission systems.
本文研究OFDM分组传输系统的符号同步与频偏估计算法。
This paper describes a novel joint acquisition algorithm of timing and carrier frequency for burst orthogonal frequency division multiplexing (OFDM) transmission system.
提出了一种新的正交频分多路(OFDM)传输系统定时和载波频率捕获联合算法。
If the length of its cyclic prefix is larger than the delay spread of transmission channel, we can get a simple frequency equalizer to demodulate OFDM signal.
对于传统的OFDM系统来说,如果循环前缀的长度大于信道的时延扩散值,则可以通过简单的频域均衡来解调OF DM信号。
Trans station interference is a distant interference of the same frequency in multi station microwave transmission.
越站干扰是微波多站传输中的一种同频远端干扰。
In former research the effects of electric contact on signal transmission have relations with a lot of factors, such as contact impedance and the frequency of transmission signal.
以前的研究表明,接触故障对信号传输的影响与很多因素有关,如接触阻抗和信号传输频率。
The superficial layers are often frequency selective to transmission.
表层传播一般都有频率选择性。
Main transmission device: the main transmission device adopts electrician frequency inverter of Shenzhen Henchman to control the vector motor, transferring each group of printing cylinders.
主传动机构:主传动采用深圳汇川变频器控制电机,传动每组印版。
High precision quartz oscillators were used for the transmission of BPV standard frequency and time signals at Shanghai Observatory.
在上海天文台BPV标频和时间信号的发播工作中,使用了高精度石英晶体振荡器。
The system's global characters are obtained under different input torque fluctuation, backlash, composite transmission error, exciting frequency and damping ratio.
得到了系统在不同的输入转矩波动、齿侧间隙、齿轮综合误差、激励频率和阻尼比参数下系统的全局特性。
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